Car body-bolster.



No. 755,290. PATENTEDYMAR. 22, 1904. age. FLOYD & c. H. HOWARD.

GAR BODY BOLS TBR.

APPLICATION FILED JAN. 9, 1904.

N0 MODEL.

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THE nunms PETERS co. momumo, wnsumcn'om n cy .UNITED STATES I Patented March 22, 1904. 1

PATENT OFFICE.

GEORGE FLOYD AND CLARENCE HLHOVVARD, OF ST. LOUIS, MISSOURI, ASSIGNORS TO AMERICAN STEEL-BODY DOUBLE-BOLSTER CO., OF ST. LOUIS, MISSOURI, A CORPORATIONOF NEW JERSEY.

' CAR BODY-BOLST-ER,

I SZPECIFICLA'JEIOIYI' forming part of Letters Patent No 755,290,-dated March 22, 1904.

Application filed January 9, 1904:.

l To all whom it may concern.-

Be it known that we, GEORGE Gr. FLOYD and CLARENCE H. HOWARD, citizens of the United States, residing at St. Louis, in the State of 5 Missouri, have invented a new and useful 'Improvement in Car Body-Bolsters, of which'the following is a specification. 7 Our invention relates to a double. bodybolster for railroad-cars.

An ordinary double body-bolster usually comprises two parallel single body-bolsters having top and bottom plates or arch-bars, respectively, with theirthimbles and connecting-bolts, a center-plate truss similar in construction to and connecting the two body-bolsters togethers and having the body-center- 'bearing casting attached thereto, all the said parts being separate pieces fastened-to each other and secured as a whole to the car-sills by bolts, whereby owing to the continual and variable strains to which the parts are relatively subjected by the working of thecar body their fastenings are liable to become loosened, which destroys the rigidity of the bolster and necessitates constant inspection and repair. p

Our invention has for its object to simplify the construction of the body-bolster, to prevent irregular strain of. its parts, and to strengthen the car-body.

The invention consists in substituting for the two separate top arch-bars of the ordinary double body-bolster and for the top arch-bars of the center-plate truss a single integral plate to which the two bottom arch-bars of the ordinary double body-bolster and the bottom archbars of the center-plate truss are secured, as hereinafter particularly described and claimed, reference being had to the accompanying drawings, forming part of this specification, whereon Figure 1 is a top plan of our improved double body-bolster; Fig. 2, a side elevation thereof as seen transversely to the car-body and showing the car-sills in cross-section; Fig. 3, a ver- "car-sills I) b.

tical longitudinal section through the bolster Serial No. 188,395. We model.)

is preferably made of cast-steel integral throughout and adapted to bear against the The plate a in-the present case is preferably formed with two opposite and parallel side-pieces 1, which span and bear against the entire series of the car-sills b I),

transversely thereto. The side pieces 1 are united to 'each other at each end by a crosspiece 2,-which coincides with and'bears longitudinally against the under side of the corresponding outer sillfi, and by an intermediate cross-piece c, the side portions 3 whereof co- 5 incide with and bear against the under sides of the two middle sills-6, while its remaining portion 3', which is located between the said sills I), is formed in the middle and adjacent portions with an upwardly-projecting pocket 7 4, bearing at its sides against the inner faces of the said sills b and having an inclined and straight top,5, similar in shapeto the top arch- 'bars of an ordinary center-platetrussand hereinafter more particularly referred to.

The cross-pieces 2 and c at the corners Where they unite with the side pieces 1 are strengthened by curved or other suitably-shaped gusset-fillings 6, whereby the plate a is prevented from springing transversely under the strains 80 of the car-body to which it issecured by bolts,

(not shown,) which pass through the holes 7 therefor in the car-sills I) b 'and plate a, as in the ordinary bolster.

To the plate a, directly beneath and longi- 5 tudinally with the side pieces 1, which take the place of the top arch-bars of the ordinary double body-bolster, are fixedthe bottom archbars 8 of the two body-bolsters OZ, respectively,

the ends of each arch-bar 8 butting against 9 opposite lugs 9, formed integrally with the plate a on itsunder face adjacent to the end cross-pieces 2. The bottom arch-bars 8 are held at the proper distance from the plate a by the usual thimbles 10 and are secured to the plate a by bolts 11 and by the usual bolts before mentioned, (not shown,) which pass through the holes 7 therefor in the sills b b and plate a.

The bottom arch-bars 12 of the center-plate truss e, which connects the two body-bolsters d together at the middle and is directly beneath the pocket I of the plate a, bear at their end portions against the under faces of the side pieces 1, respectively, of the plate a and are fixed thereto and to the corresponding bottom arch-bars 8 thereunder of the bodybolsters d by bolts 13, which pass through the plate a and bars 12 and through the thimbles 1 k and bottom arch-bars 8, as shown. The ends of the bars 12 butt against lugs 12,which are formed integrally on the plate a.

The bottom arch-bars 12 of the truss e are fixed at their middle portion to the top 5 of the pocket 4 (or arched portion of the plate a, which takes the place of the top arch-bars in the ordinary center-plate truss,) by bolts 15, which pass through the plate thereat, thimbles 16, and bottom arch-bars 12, and through the center-bearing casting 17, which is thereby secured to the truss e, as in the ordinary bolster. By this construction the bottom arch-bars 8 of the two body-bolsters d and the bottom arch-bars 12 of the center-plate truss 0 instead of being. respectively, fixed to two separate top arch-bars, as in the ordinary double body-bolster, are fixed to a single rigid plate having a solid foundation and extended bearing-surface over a considerable area of the car-sills I) b, so that the springing or torsional strain thrown by the working of the What we claim as our invention, and desire to secure by Letters Patent, is-- 1. In a car body-bolster of the class described, the combination of a plate adaptedto bear against the car-sills and having two opposite lugs under each side portion thereof, and having an upwardly-projecting pocket, an arch-bar dependent from and fixed to the plate at each side portion thereof transverely to the car-sills, and between the said lugs, a truss consisting of two bottom arch-bars extending between and fixed at their ends to the said bars dependent from the plate, and to the corresponding side portions of the plate thereover respectively, and having their middle portions fixed to the top of the said pocket, a centerbearing casting fixed to the truss, and means for securing the plate to the car-sills, substantially as described and for the purpose set forth.

2. In a car body-bolster of the class described, the combination of a plate consisting of two opposite side pieces, and of cross-pieces uniting the side pieces. the'said pieces being adapted to bear against the car-sills and having lateral gussets at their junction to each other, each side piece having two opposite lugs on its under face, and one of the said crosspieces having an upwardly-projecting pocket, all the said parts being integral throughout, an arch-bar dependent from and fixed to the plate at each side piece thereof transversely to the car-sills and between the said lugs, a truss consisting of two bottom arch-bars extending between and fixed at their ends to the said bars dependent from the plate, and to the corresponding side pieces of the plate thereover respectively, and having their middle portions fixed to the top of the said pocket, a center bearing casting fixed to the truss, and means for securing the plate to the car, substantially as described.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

GEORGE G. FLOYD. CLARENCE H. HOWARD.

Witnesses:

EDWARD W. FURRELL, G. L. BELFRY. 

